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Jaw deformities in the larvae of yellowtail kingfish (Seriola lalandi Valenciennes, 1833) from two groups of broodstock

文献类型： 外文期刊

作者： Ma, Zhenhua 1 ; Tan, Daniel Aik Yang 2 ; Qin, Jian G. 2 ;

作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Key Lab South China Sea Fishery Resources Exploit, Minist Agr, Guangzhou 510300, Guangdong, Peoples R China

2.Flinders Univ S Australia, Sch Biol Sci, Adelaide, SA 5001, Australia

关键词： Broodstock;Fish larvae;Jaw deformities;Seriola lalandi;Standard length;Yellowtail kingfish

期刊名称：INDIAN JOURNAL OF FISHERIES （ 影响因子：0.5； 五年影响因子：0.592 ）

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收录情况： SCI

摘要： Jaw malformation is a major bottleneck in hatchery development of marine finfish. This study compared the occurrence of jaw deformities in larvae produced from two sets of broodstock of yellowtail kingfish (Seriola lalandi, Valenciennes 1833). Fish eggs from two groups of broodstock (B1 and B2) were separately hatched and the fish larvae were reared up to 25 days under similar conditions. No significant differences were found in specific growth rate and overall jaw deformities between these two groups. However, a clear pattern was observed in occurence of jaw deformities at different lengths groups. In population B1, minor deformities occurred in larvae of 9.80-11.60 mm standard length (SL) with maximum in fish of 10.89-11.11 mm SL. In B2. minor jaw deformities occurred in larvae of 8.69-12.21 mm SL with maximum deformities observed in fish of 9.35-9.52 mm SL and 10.18-10.34 mm SL. No severe jaw deformities were found in either of the two groups of larvae in this study. The study clearly showed that the sizes at which jaw deformities occur vary between two groups of larvae of the same species, under the same environmental and nutritional conditions. which indicated the need for selective breeding to reduce occurrence of deformity in the larvae.

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